field day
noun
1
- in sing. an opportunity for action, success, or excitement, especially at the expense of others（尤指有损他人的）行动（或成功、寻求刺激）的机会：
shoplifters are having a field day in the store.
商店扒手正在这家商店大肆行窃。
2
- Military a review or an exercise, especially in manoeuvring【军】（尤指机动的）阅兵, 操练。
3
- chiefly N. Amer. a day devoted to athletics or other sporting events and contests〈主北美〉体育运动（或比赛）日。
4
- Austral./NZ a day set aside for the display of agricultural machinery〈澳/新西兰〉农机展示日。